Question

化简~ (x^4+x^3−x^2−x+1) / (x^3W

Answer 1

（x^3-x+x^4-x^2+1)/(x^3-1)

={[x(x^2-1)]+[x^2(x^2-1)]+1}/[x(x^2-1)]

=x+[1/x(x^2-1)]

不知道这算最简了不